Google SEO
Best practices — Google Search Central
Why should HTTPS cover the entire website?
HTTPS has been a baseline trust signal since 2014. Check for mixed content: resources loaded over HTTP inside an HTTPS page.
Further analysis
Use this entry as an audit checkpoint. The cited source establishes the context; the direct answer identifies what to check before choosing an action.
In SFT, this topic relates to Trust. Check whether the signal is visible on the page, connected to the rest of the website and supported by understandable evidence.
Related search terms include HTTPS, SSL, security. Use them to describe the issue in a brief, audit or answer page.
Applying SFT
Trust requires observable evidence: sources, consistency, citations, identifiable authors and verifiable claims.